M. Sigmund, A. Prokes, and P. Zelinka (Czech Republic)
Speech signal, glottal flow analysis, alcohol detection
Speech changes resulting from alcohol intoxication were investigated in recorded clean speech using the Liljencrant-Fant model of glottal pulses. For use in our experiments, a new collection of intoxicated speech at two levels of intoxication was created. All vowels were tested individually. In person independent experiments, analysis of vowel excitation appears to be a useful technique to provide evidence of alcohol consumption of over 1‰ of blood-alcohol concentration.
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